Piston-ring.



V. P. MAGARRELL.

PISTON RlNG.

APPHCATION FILED DEC. 3 1914.

Patented Aug. 24, 1915 thereof and to also accomplish the it I 5 AcVIRGIL P. EEAGAEEELL, 033 TILLAMOQK, QREGUN.

Application filed December 3.

"0 all M71 012/ it may concern Be it known tlfat I, VniGiL P. lillioannnml, a citizen or the United States, residing at Tillamook, in thecounty of Tillamool-i and State of Oregon have invented certain new anduseful improvements in listoirl'lings, of which the following is aspecification.

An object of my invention is to provide a piston packing ring made up oftwo members one of which is adapted to be received in the usual ringgroove provided in the outer face of a piston and has a peripheral.groove in which the second member is mounted prior to fitting the pistonto the cylinder, ea::h of the members being in the form of a split ringto permit assembly desired resiliency to form the packin A furtherobject is to so construct themembers that the split ends thereof arescarfed and overlapped in a manner to provide a substantially continuousring throughout the entire peripheral extent of the piston groove.

With other objects in view. Which will he referred to, my inventionconsists in the peculiar combination and novel arrangement of parts,such as will be hereinafter more fully described in connection with theaccompanying dgawings and more particularly pointed out in the appendedclaims.

In the drawing Figure 1 is a view in perspective of the complete withthe two members thereof mounted in the operative relation With respectto each other.

Fig. 2 is a View similar to Fig. 1 illustrating the inner ring memberadapted to be fitted to the piston groove. Fig. 3 is a perspective viewof the outer ring member. Fig. is a fragmentary sectional View through.the cylinder of an engine with a piston having my invention appliedthereto mounted Within the cylinder; Fig. 5 is a fragmentary detailperspective of a slightly modified form of the main ring member.

The main piston ring member 1 is in the form of a split ring made ofsufficient extent that the ends thereof overlap when brought to arelation to form a complete ring oft-he size of the desired packing ringand these split ends are cut and notched. or

' scarfed as is better illustrated in Figs. 1 and 2, one end having anotch upon. the outer face thereof and the remaining end notched. v ontheinner face, and also i-v is prefer is that the end 2 be sheared of?squsre as Specification of Letters Patent.

STOW-RING:

"Fatenteo Aug. me, this 1214, serial No. 575,326.

to lit Within the squared notch d on the in nor face of the end 5 ofthis member. The extreme end of the portion 5 of the member 1 is sheareddiagonally as at 6 and the end 2 has a. correspondingly vided at theouter end face thereof. In addition to having the ends thereof notched,the ring nienibcrl has peripheral groove 8 formed in the outer lfmrethereof and it is preferable that the sjliagoaally notched portion '7l": sunk into the end 2- of the ring to a greater depth than the depthof this groove B and thus the diagonal abutting'lap of the two ends isformed in a position and relation to close the to the straight passageof fluid thcrethrmigh in a relation coaxially with the piston. Thesecond. piston. ring member or the auxiliary ring 9 is made of adimension to fit within the groove 8 of the ring memberl and the ends 10and 1]. thereof have tongues 12 and 13 provided to extend therefrom, thetongue 12 being positioned to have its outer face in a plane parallelwith the lower face of the auxiliary ring member 9 and the tongue 13 tobe similarly located with respect to the upper face of the ring member.By forming the ends of the auxiliary ring member 9-as hereinbefore setforth, a structure is provided with which the two ends may be inerfitted and Will lie Within the groove 8. The mounting of the ring is'as better illus trated in Fig. 4c, and in this disclosure the pistonWithin the cylinder 1? is disclosed.v This piston 14 has the usualpacking ring groove 16 and in this groove the ring member I will firstbe mounted, then the auxiliary spring member 9 is sprung into place inthe groove 8 of the member 1 with the split ends thereof preferablyspaced apart from the split ends of the ring member 1.. The piston canthen befittedinto place in the cylinder and the engagement of the outerperipheral faces of the ring members with the interior Wall of thecylinder 15 will cause these ring members to be closed in their splitportion to the relation illustrated in Fig. etwherethe notchedand tongueends will have interfitting engagement and fluidtight joints" are formedto prevent leakage within the cylinder around the piston.

In "the form illustrated inliig. 5, "the speared cut fi f the and, a .ithe ring memhorl acute an... thisnecessitates aticn provides a tongue atshaped notch 7 ss angle of the cutlat 7',

